64 Cambridge Street London SW1V 4QQ

1. 2 Sep 2025

   Received by Westminster

2. 10 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 5 November 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 65 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided lawful development applications in a median of 78 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 65 Cambridge Street London SW1V 4PS

  26/03949/FULL Submitted 15 Jun 2026 41m away

  87% historically approved · decision due ~13 Aug

  Erection of a single storey glazed infill extension at rear lower ground level; installation of air conditioning unit in enclosure within rear yard; replacement of rear ground floor window with doors and Juliet balcony; and removal of window in rear side elevation and making good of brickwork.

  Awaiting decision Full applications Extension Windows or glazing 17 docs
  Small domestic

• 128 Warwick Way London SW1V 4JA

  26/05979/FULL Submitted 2 Sep 2026 42m away

  87% historically approved · decision due ~4 Nov

  Replacement of front and rear windows with double glazed timber framed sash and casement windows; replacement of a door with a double glazed timber framed door; and associated works.

  Awaiting decision Full applications Windows or glazing

• 50A Cambridge Street London

  22/03923/FULL Submitted 16 Jun 2022 48m away

  Variation of condtion 1 of planning permision dated 28 October 2021 (RN: 21/06105/FULL) for the: Use of ground and lower ground floor in connection with residential flat above; construction of a mansard with roof terrace; lower ground rear extension; a front lightwell extension and new railings; replacement of the non-original first floor external balustrade and fenestration alterations. NAMELY, to allow replacement of the existing piers and modern metal railing at first floor level with new traditional black painted metal railing; and raising the cill heights of the approved painted timber sash windows at the lower ground floor street facing facades by 150mm.

  Granted Full applications Extension Loft or dormer +1 12 docs

• 54 Alderney Street London SW1V 4EX

  26/04277/TCA Submitted 29 Jun 2026 52m away

  100% historically approved · decision due ~24 Aug

  We planted an olive tree in the bed on the patio behind our house in 2004. It has apparently found a water source and grown much larger than originally expected. We have pruned it regularly, but it has continued to grow and is now disproportionately large for a relatively small patio area. Unfortunately, it has attracted a fungus, which produces substantial amounts of white residue and sticky deposits, which render the use of our outside space effectively impossible. We have taken advice from a tree surgeon, who has told us that without knowing the source of the infection (probably another fruit tree) it will not be feasible to eliminate this. The tree is also now too big to treat. In the light of this, we are seeking permission to cut the tree down.

  Awaiting decision Trees 6 docs

• Basement 41 St George's Drive London SW1V 4DG

  26/01193/FULL Submitted 25 Feb 2026 60m away

  87% historically approved · decision due ~22 Apr

  Erection of side infill extension at rear lower-ground level and lowering of the front vaults. (Linked to 26/01194/LBC)

  Awaiting decision Full applications Extension 28 docs

• Basement 41 St George's Drive London SW1V 4DG

  26/01194/LBC Submitted 25 Feb 2026 60m away

  90% historically approved · decision due ~22 Apr

  Erection of side infill extension at rear lower-ground level and lowering of the front vaults and internal alterations. (Linked to 26/01193/FULL)

  Awaiting decision Heritage and listed buildings Extension 23 docs

• 26/06158/CLOPUD Awaiting decision

  2 Hamilton Gardens London NW8 9PT

  Erection of replacement, enlarged single storey ground floor rear extension.

  9 Sep 2026 Lawful development
• 26/06080/CLEUD Awaiting decision

  91 Gloucester Place London W1U 6JG

  Certificate of lawfulness for an existing use or development to confirm that the development authorised by full planning permission ref. 22/08385/FULL & listed building consent (RN 22/08386/LBC) has lawfully commenced as a result of the works evidenced.

  7 Sep 2026 Lawful development
• 26/06044/CLOPUD Awaiting decision

  9 Abinger Mews W9 3SP

  Proposed loft conversion with rear dormer and 3 front rooflights to existing mid-terraced house.

  3 Sep 2026 Lawful development
• 26/06035/CLOPUD Awaiting decision

  30 Ashworth Road W9 1JY

  Erection of new garden retaining wall and erection of new garden timber fence to match the height of existing fence.

  3 Sep 2026 Lawful development
• 26/05871/CLEUD Awaiting decision

  32 Cambridge Street London SW1V 4QH

  Confirmation of the lawful implementation of planning permission dated 13 August 2021 (RN: 21/04143/FULL) has commenced before the expiry of the three year time period and may, therefore, lawfully be carried out and completed.

  27 Aug 2026 Lawful development